diff --git a/requirements.txt b/requirements.txt
index 611cfa31a..3c829147f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,14 +3,13 @@
 # process, which may cause wedges in the gate later.
 
 pbr>=1.6 # Apache-2.0
-Babel>=2.3.4 # BSD
+Babel!=2.3.0,!=2.3.1,!=2.3.2,!=2.3.3,>=1.3 # BSD
 kazoo>=2.2 # Apache-2.0
-ovs>=2.5.0;python_version=='2.7' # Apache-2.0
-ovs>=2.6.0.dev1;python_version>='3.4' # Apache-2.0
+ovs>=2.4.0;python_version=='2.7' # Apache-2.0
 pyzmq>=14.3.1 # LGPL+BSD
-ryu!=4.1,!=4.2,>=3.30 # Apache-2.0
+ryu>=3.30 # Apache-2.0
 SQLAlchemy<1.1.0,>=1.0.10 # MIT
-alembic>=0.8.4 # MIT
-oslo.config>=3.9.0 # Apache-2.0
+alembic>=0.8.0 # MIT
+oslo.config>=3.7.0 # Apache-2.0
 oslo.db>=4.1.0 # Apache-2.0
 redis>=2.10.0 # MIT
diff --git a/test-requirements.txt b/test-requirements.txt
index 3b2bc8a5e..2a5c8e180 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -14,4 +14,4 @@ oslotest>=1.10.0 # Apache-2.0
 testrepository>=0.0.18 # Apache-2.0/BSD
 testscenarios>=0.4 # Apache-2.0/BSD
 testtools>=1.4.0 # MIT
-reno>=1.6.2 # Apache2
+reno>=0.1.1 # Apache2